Ubuntu MATE 18.04 on Raspberry Pi 3B+ Try to run apt updates and the following occurs: Hit:1 http://ppa.launchpad.net/ubuntu-pi-flavour-makers/ppa/ubuntu bionic InRelease Hit:2 http://ports.ubuntu.com bionic InRelease Hit:3 http://ports.ubuntu.com bionic-updates InRelease Hit:4 http://ports.…